Does Lund have a Flex Fuel Tune for 2021 Mach 1?Both Lund and PBD will tune on an MPVi2+ as long as you're using the TDN app. PBD will also tune on SCT devices.
Let us know if you have any other questions in the meantime.
Is 70% Ethenol E85 good enough to run a E85 Tune? And is it worth it if your E85 is only 70%?